US1414520A - Lathe turning tool - Google Patents

Lathe turning tool Download PDF

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Publication number
US1414520A
US1414520A US386856A US38685620A US1414520A US 1414520 A US1414520 A US 1414520A US 386856 A US386856 A US 386856A US 38685620 A US38685620 A US 38685620A US 1414520 A US1414520 A US 1414520A
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US
United States
Prior art keywords
tool
turning tool
lathe turning
turning
shank
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US386856A
Inventor
Martin Trevillie Owen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
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Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US386856A priority Critical patent/US1414520A/en
Priority to FR548284D priority patent/FR548284A/en
Priority to GB8085/22A priority patent/GB197480A/en
Application granted granted Critical
Publication of US1414520A publication Critical patent/US1414520A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
    • B23B27/16—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00—Cutters, for shaping
    • Y10T407/28—Miscellaneous

Definitions

  • V' the invention has as another of its features i; STATES TREVILLIE OWEN MARTIN, OF JACKSON, TENNESSEE.
  • This invention relates to tools of that type adapted for turning metal stock in 'lathes.
  • the invention has, as one of its features, the conservationof expensive high speed tool steels such as are used in making turning tools, twist drills and the like, by converting discarded twist drills into lathe tools.
  • A. further feature of the invention resulting from forming the tool with a spiral b dy is that cooling fins are provided which dissipate the heat, this dissipation of the heat being augmentedby the fact that the peculiar spiral configuration of the tool body permits of a maximum diameter with af minimum mass of metal.
  • Figures 1, 2 and 3 are side elevations of g the tool in different rotated positions
  • Fig. 5 is a perspective view of the tool in the holder.
  • the invention is formed of a twist drill shank 1 which, in cross section, is approximately of the shape shown in Fig. 4 and wherein the lands 2 and 3 of the drill body are clearly shown. It is, of course, apparent that this same cross section is presented throughout the entire length of the twist drill body and for that reason it is possible to grind off the point of the drill body to the form indicated at 4: in
  • the holder 10 is especially well adapted for this tool inasmuch as it is supported on 4: and the point then being rounded on both sides and the front as indicated at 6 and beveled as indicated at 7, thus providing a turning tool having the proper clearance for use in turning metals.
  • a turning tool comprising a shank having two diametrically opposite grooves formed spirally therein and providing intervening lands, one of thelands at one end of the shank being formed with a flat face inclined downwardly from the extremity of the shank toward the axis thereof, the shank at its said end being rounded transversely at the opposite sides-and front of the flattened surface, and the ends of the grooves extending into the rounded sides and terminating short of the rounded front.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling Tools (AREA)

Description

T. O. MARTIN.
LATHE TURNING TOOL- APPLICATION mm JUNE 5, 1920.
1,414,520, Patented May 2,1922.
V' the invention has as another of its features i; STATES TREVILLIE OWEN MARTIN, OF JACKSON, TENNESSEE.
LATHE TURNING TOOL.
Specification of Letters Patent. Patented May 2, 1922,
Application filed June 5, 1920. Serial No. 386,856.
T 0 all whom it may concern:
Be it known that I, TREVILLIE O. MARTIN, a citizen of the United States, residing at Jackson, in the county of Madison and State of Tennessee, have invented certain new and useful Improvements in Lathe Turning Tools, of which the following is a specification.
This invention relates to tools of that type adapted for turning metal stock in 'lathes.
The invention has, as one of its features, the conservationof expensive high speed tool steels such as are used in making turning tools, twist drills and the like, by converting discarded twist drills into lathe tools.
Aside from the. conservation of material,
the provision of a tool of this character formed with a spirally twisted shank, thus providing a maximum diameter with a minimum of metal and having a cutting end shaped for use as a turningtool. This construction permits of the tool being ground repeatedly and always presenting the same cross section for grinding.
A. further feature of the invention resulting from forming the tool with a spiral b dy is that cooling fins are provided which dissipate the heat, this dissipation of the heat being augmentedby the fact that the peculiar spiral configuration of the tool body permits of a maximum diameter with af minimum mass of metal.
in the drawings: Figures 1, 2 and 3 are side elevations of g the tool in different rotated positions;
is a section on the line 44 of Fig. 3;
Fig. 5 is a perspective view of the tool in the holder.
In detail:
The invention, as herein shown, is formed of a twist drill shank 1 which, in cross section, is approximately of the shape shown in Fig. 4 and wherein the lands 2 and 3 of the drill body are clearly shown. It is, of course, apparent that this same cross section is presented throughout the entire length of the twist drill body and for that reason it is possible to grind off the point of the drill body to the form indicated at 4: in
Figs. 1, 2 and 3, one land 2 being ground flat on the top side as indicated at 5 and as clearly shown by the dotted line in Fig.
' cylindricaltool body. 1 p The holder 10 is especially well adapted for this tool inasmuch as it is supported on 4: and the point then being rounded on both sides and the front as indicated at 6 and beveled as indicated at 7, thus providing a turning tool having the proper clearance for use in turning metals.
It will be seen that in using a spirally twisted body for the purpose of forming lands are exceedingly thin as indicated at 9 a further cooling effect is obtained.
Now, with referen'ceflto Fig. 5 it will be apparent that the tool presents a substantially cylindrical surface, for clamping in a tool holder such as is claimed in Patent No. 1,304,898, issued to me May 27, 1919, which may be used with particularly efiective results.
vIn grinding the twist drill to form'a turning tool the lips of the drill are ground so that when the tool is mounted in the holder it maybe positioned with the greatestthickness of metal ona perpendicular plane, with the result that the .tool presents substantially the same strength as would a full the projection 11 whereby chattering of the tool is eliminated.
It is to be noted that in regrinding the tool it is only necessary to rotate it slightly in orderto present an ldentical cross section upon each regrinding of the'tool.
I claim:
A turning tool comprising a shank having two diametrically opposite grooves formed spirally therein and providing intervening lands, one of thelands at one end of the shank being formed with a flat face inclined downwardly from the extremity of the shank toward the axis thereof, the shank at its said end being rounded transversely at the opposite sides-and front of the flattened surface, and the ends of the grooves extending into the rounded sides and terminating short of the rounded front.
' In testimony whereof I afiix my signature.
' TREVILLIE OWEN MARTIN. [L. 8.]
US386856A 1920-06-05 1920-06-05 Lathe turning tool Expired - Lifetime US1414520A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US386856A US1414520A (en) 1920-06-05 1920-06-05 Lathe turning tool
FR548284D FR548284A (en) 1920-06-05 1922-03-07 Tool for turning metals
GB8085/22A GB197480A (en) 1920-06-05 1922-03-20 Improvements in and relating to lathe turning tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US386856A US1414520A (en) 1920-06-05 1920-06-05 Lathe turning tool

Publications (1)

Publication Number Publication Date
US1414520A true US1414520A (en) 1922-05-02

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ID=9845456

Family Applications (1)

Application Number Title Priority Date Filing Date
US386856A Expired - Lifetime US1414520A (en) 1920-06-05 1920-06-05 Lathe turning tool

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US (1) US1414520A (en)
FR (1) FR548284A (en)
GB (1) GB197480A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2502922A (en) * 1944-11-01 1950-04-04 Norton Co Cutting tool
US2677170A (en) * 1951-06-16 1954-05-04 Robert J Kuns Cutting bit
US2840887A (en) * 1950-11-15 1958-07-01 Donnelly Walter James Metal cutting tools and elements
US3395434A (en) * 1966-06-01 1968-08-06 Sandvikens Jernverks Ab Cutting insert for chip cutting machining
US5466097A (en) * 1993-01-27 1995-11-14 Sandvik Ab Cutting insert with twisted chip surface

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2502922A (en) * 1944-11-01 1950-04-04 Norton Co Cutting tool
US2840887A (en) * 1950-11-15 1958-07-01 Donnelly Walter James Metal cutting tools and elements
US2677170A (en) * 1951-06-16 1954-05-04 Robert J Kuns Cutting bit
US3395434A (en) * 1966-06-01 1968-08-06 Sandvikens Jernverks Ab Cutting insert for chip cutting machining
US5466097A (en) * 1993-01-27 1995-11-14 Sandvik Ab Cutting insert with twisted chip surface

Also Published As

Publication number Publication date
GB197480A (en) 1923-05-17
FR548284A (en) 1923-01-11

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